Time-resolved photoabsorption in finite systems : A first-principles NEGF approach
dc.contributor.author | Perfetto, E. | |
dc.contributor.author | Uimonen, Anna-Maija | |
dc.contributor.author | van Leeuwen, Robert | |
dc.contributor.author | Stefanucci, G. | |
dc.date.accessioned | 2016-08-29T08:04:36Z | |
dc.date.available | 2016-08-29T08:04:36Z | |
dc.date.issued | 2016 | |
dc.identifier.citation | Perfetto, E., Uimonen, A.-M., van Leeuwen, R., & Stefanucci, G. (2016). Time-resolved photoabsorption in finite systems : A first-principles NEGF approach. In <i>Progress in Non-equilibrium Green’s Functions (PNGF VI)</i> (Article 012004). Institute of Physics Publishing Ltd.. Journal of Physics: Conference Series, 696. <a href="https://doi.org/10.1088/1742-6596/696/1/012004" target="_blank">https://doi.org/10.1088/1742-6596/696/1/012004</a> | |
dc.identifier.other | CONVID_26139807 | |
dc.identifier.uri | https://jyx.jyu.fi/handle/123456789/51101 | |
dc.description.abstract | We describe a first-principles NonEquilibrium Green’s Function (NEGF) approach to time-resolved photoabsortion spectroscopy in atomic and nanoscale systems. The method is used to highlight a recently discovered dynamical correlation effect in the spectrum of a Krypton gas subject to a strong ionizing pump pulse. We propose a minimal model that captures the effect, and study the performance of time-local approximations versus time-nonlocal ones. In particular we implement the time-local Hartree-Fock and Markovian second Born (2B) approximation as well as the exact adiabatic approximation within the Time-Dependent Density Functional Theory framework. For the time-nonlocal approximation we instead use the 2B one. We provide enough convincing evidence for the fact that a proper description of the spectrum of an evolving admixture of ionizing atoms requires the simultaneous occurrence of correlation and memory effects. | |
dc.language.iso | eng | |
dc.publisher | Institute of Physics Publishing Ltd. | |
dc.relation.ispartof | Progress in Non-equilibrium Green’s Functions (PNGF VI) | |
dc.relation.ispartofseries | Journal of Physics: Conference Series | |
dc.subject.other | photoabsorption | |
dc.subject.other | finite systems | |
dc.title | Time-resolved photoabsorption in finite systems : A first-principles NEGF approach | |
dc.type | conference paper | |
dc.identifier.urn | URN:NBN:fi:jyu-201608013710 | |
dc.contributor.laitos | Fysiikan laitos | fi |
dc.contributor.laitos | Department of Physics | en |
dc.contributor.oppiaine | Nanoscience Center | fi |
dc.contributor.oppiaine | Nanoscience Center | en |
dc.type.uri | http://purl.org/eprint/type/ConferencePaper | |
dc.date.updated | 2016-08-01T12:15:12Z | |
dc.type.coar | http://purl.org/coar/resource_type/c_5794 | |
dc.description.reviewstatus | peerReviewed | |
dc.relation.issn | 1742-6588 | |
dc.type.version | publishedVersion | |
dc.rights.copyright | © Published under licence by IOP Publishing Ltd. This is an open access article distributed under the terms of the Creative Commons Attribution (CC BY) licence. | |
dc.rights.accesslevel | openAccess | fi |
dc.type.publication | conferenceObject | |
dc.relation.conference | Progress in Non-equilibrium Green's Functions | |
dc.rights.url | http://creativecommons.org/licenses/by/3.0/ | |
dc.relation.doi | 10.1088/1742-6596/696/1/012004 | |
dc.type.okm | A4 |